Apple has still not finalised how it will make its Touch ID fingerprint scanner work beneath the iPhone 8’s screen, rumours suggest, with the result that the phone's release could slip back towards the end of 2017.
Analyst Timothy Arcuri says the Californian company is testing three different versions of in–screen fingerprint scanner.
Want more iPhone 8 news? We've collated all the speculation for our rumours round-up.
One apparently utilises small hole drilled through the glass panel, while another makes use of film sensor integrated inside the display.
The third version is said to use thinner glass around the Touch ID unit to make it easier to read.
Whichever one Apple plumps for, it’s likely to hold up release, says Arcuri.
Apple may launch the iPhone 8 in September but then hold back release for as much as two months as it gets devices ready.
This latest rumour flies in the face of recent reports, which claimed that Apple’s Asian manufacturing partners had already begun mass production of the iPhone 8.
Whatever the real story and whenever the iPhone 8 really does land on shop shelves, Apple looks certain to unveil a new, tenth anniversary iPhone in early autumn, with a wholly new design, vertical dual lens camera and vastly improved internal specs.